要如何编写实现就是如果三个文本输入框没有进行填写的话，对话框会进行提示呢（要对文本框的填写情况进行一个是否填写的判断，但是自己尝试了一下弄不出来） 就一个非空判断，参考如下： App Inventor 2  发表于 ...

... Did you edit the AndroidManifest.xml directly in the .apk file? If so, that won't work. Every Android .apk needs to be signed if it is going to be installed on a phone, even if you're not installing through the Market. The development tools work round this by signing with a d...

Is it possible to decompile an APK package or DEX file on Android platform? Are there any tools that can decompile an APK file? ...

... Yes you can view XML files of an Android APK file. There is a tool for this: android-apktool It is a tool for reverse engineering 3rd party, closed, binary Android apps How to do this on your Windows System: Download apktool-install-windows-* file Downloa...

...app that I have been working on for the past two months. All I have is the APK file that is stored in my email from when I sent it to a friend. ...

... First, unzip the APK and extract the file /META-INF/ANDROID_.RSA (this file may also be CERT.RSA, but there should only be one .RSA file). Then issue this command: keytool -printcert -file ANDROID_.RSA You will get certificate fingerprin...

...页 发送短信验证码功能一般都是基于短信平台提供的sdk进行调用，这里是基于阿里云短信平台进行的开发，阿里云短信平台点此开通，接入步骤请点此参考。 App Inventor 2 中文网原创开发阿里短信平台接入拓展 提供的函数如...

从拓展市场进行一键导入/升级：ECharts.js 图表库非常的丰富，只有你想不到没有它做不到的！不过目前我们开发的种类有限，如果你有其他图表展示的需求，请点击右侧“文档反馈”进行反馈！ ECharts 拓展 使用AppInventor2布局进...

...在一个Dlg增加一个GridCtrl的控件： 我们可以按以下步骤进行： 第一步：表格控件加到工程中去 可以有两种方法： (1)可以使用controls panel中的custom control添加，添加后如下设置： (2)也可以用菜单View－Resource Symbol添加一个ID号...

...，扫描和广播是通信的基础，用户可以直接用扫描和广播进行数据的传输（数据量不大，功耗要求较高的情况下），也可以在广播和扫描的基础上进行连接后点对点通信。广播访问地址广播包：广播包Access Address 固定为0x8E89BED6...